Improvement in the construction of grooved rolls



` Jahn U67 S E. RICHARDS.

CONSTRUCTION 0F GROOVED'ROLLS. N 177 424 Patented May16,1876.

F777 @Niue l R L'howols MPETERS, PHOTO-LITHOGRAPMR, WASHINGON. D C:

vUNITED STATES PATENT OFFICE.

EMANUEI. RICHARDS, oF READING, PENNSYLVANIA, ASSIGNOR To WILLIAM W.SEITZING'ER, 0E SAME PLAGE.

IMPROVEMENT IN THE CONSTUCTION OF GROOVED RCLLS.

Specification forming part of Letters Patent No. 177,424, dated May16,1876; application led September 10, 1875.

To all whom it may concern:

Beit known that I, EMANUEL RICHARDS of the city of Reading, county ofBerks and State of Pennsylvania, have invented anew and usefulImprovement in the Construction of Welding and Sizing Rolls for theManufacture of Gas-Pipes and BoilerFlues, of which the following is aspecification:

These rolls are mounted in housings, and are driven in the usual mannerby a couplingbox, connecting the flutes on the neck of the roll with thetlutesof the main driving-shaft.

The improvement is fully set forth in the following specification,reference being had to the accompanying drawings, of Which- Figure l isa front elevation, part in section, Fig. 2 an end elevation, and Fig.3 asection, of the sliding disk.

The object of my invention is to so construct Welding and sizing rollsthat, notwithstanding wear, their original diameter may be retaineduntil the rolls are Worn out. This I attain by making the rolls in twoor more parts, as shown.

The shaft A may be made separate from the body of the roll C C; or itmay be cast with the disk G, forming an integral portion of the same. Iprefer the arrangement shown in the drawings, in which A is the shaft;B, the flutes by which it is driven; (l, a disk titted to the shaft A,and secured tothe same by a key, g. C is a similar disk, sliding freelyon shaft A, and over feather, F. The disks are provided on their insidefaces with projecting surfaces D D, and with bolts E for retainingthemin contact with each other. When put together, as described, theyare. finished in a lathe the same as ordinary rolls.

When, from Wear, the rolls require reshaping. the bolts E are slackedup, and a link of sufficient thickness to separate the surfaces l) D isdropped-over the shaft A between the disks C C. The bolts E are thentightened, and the rollbeing put in a lathe, a tool is inserted betweenthe disks and enough of the surfaces D D removed to take up the sidewear of the rolls. Bolts E are then slacked and' the link removed, thedisks U C brought together again by the bolts E, and the desired shapegiven to the forming-surfaces. In this way the roll can at any time berelitted Without being decreased in diameter. In case of breakageduplicate parts can' he substituted, and the Whole roll is not a. loss.

By the use of this invention the speed of the rolls and motor remainsuniform throughout, While under the present system every change in thediameter ofthe rolls, from Wear and rent-ting, necessitates a change ofgearing or alteration of speed in the motor.

I claim as lny invention- .A grooved welding' and sizing roll,constructed of the disks G C', provided with projecting surfaces D D,attached together by ythe bolts E E', substantially as herein shown anddescribed.

EMANUEL RICHARDS. '[L. s] Witnesses:

MATTHIAS MENGE@ J. F. MoERs.

